The state-to-state spread of online gambling will fuel terrorism networks and transnational organized crime as it makes money laundering easier for those groups, former New York Gov. George Pataki told CNBC on Wednesday, citing the FBI.

“They have said it’s going to be very difficult if not impossible to monitor this,” said Pataki, the co-chair of the Coalition to Stop Internet Gambling, a public campaign backed by Las Vegas casino magnate Sheldon Adelson. “Changing the law that was in effect for 20 years simply by [a] ruling of the Department of Justice, this is not in the American people’s interest.”